Syracuse, NY - Kameka Alexander broke down in tears this afternoon as she told a jury how she cradled her dying 20-month-old son in her arms after he was shot in the head while sitting in his car seat.

Alexander said she and her son, Rashaad Walker Jr., were sitting in a vehicle in the 300 block of Coolidge Avenue the afternoon of Nov. 28, 2010, when she suddenly heard a gunshot.

Alexander said she grabbed for the child's father, who was sitting in the driver's seat of the minivan, before she ducked down in the seat.

The now 19-year-old testified she repeatedly screamed out "my son is in the car, my son is in the car" as several more shots rang out. One of the bullets slammed into the center of the dashboard in front of her, Alexander said.

When the shooting stopped and Alexander sat up, the three adults who had been in the vehicle with her were gone, she testified. When she turned, she saw that her young son had been shot in the head in the seat behind her.

Alexander testified she grabbed her son and fell to the ground outside the vehicle. That's when she broke into tears on the witness stand in court.

Reputed Bricktown gang member Saquan Evans is charged with being the gunman who fired the shot that killed the little boy.

But the jurors heard some conflicting testimony this afternoon from a prosecution witness who identified Evans as the shooter.

A'Shaudia McDonald testified she was sitting in the seat next to the toddler in the minivan when she heard one shot and turned to see a gunman approaching the vehicle.

On direct questioning by District Attorney William Fitzpatrick, McDonald initially said she recognized the gunman as Evans. But moments later, she admitted she never actually saw the gunman's face that day.

McDonald said she identified the gunman as Evans based on the black jeans and black hooded sweatshirt the gunman was wearing.

On cross examination by defense lawyer Edward Klein, McDonald admitted there was nothing unique about the clothing that led her to identify Evans as the gunman.

Klein then grilled her about evidence she told police that another Bricktown gang member, Carlton Morman, was the shooter. While McDonald claimed a police detective made up a lot of what was contained in her statement, she finally admitted she had mentioned Morman.

But she claimed it was only that someone else at the scene had told her Morman was reported to be the gunman.

McDonald also denied calling out during the shooting, "Don't shoot. It's me, It's me." She admitted screaming out for the gunman not to shoot but denied saying the rest of the sentence.

Alexander contradicted that. The victim's mother said she heard her friend calling out, "It's me. It's me," leaving her with the idea McDonald recognized the gunman at the time of the crime.

Alexander testified under cross examination by Klein that McDonald never mentioned Evans' name the day of the shooting but did mention Morman's name when she was questioned about who the gunman had been.

State Supreme Court Justice John Brunetti, however, eventually instructed the jurors to disregard what Alexander said about what McDonald did or did not tell her after the shooting.

The jury of eight women and four men also heard this afternoon the first two calls to the 911 center reporting the shooting. On one of the calls, a woman's voice could be heard repeatedly screaming, "Oh my God! My baby!"

Syracuse police Detective Scott Henderson then testified he was the first officer on the scene as he was only two blocks away when the incident was reported.

Henderson said the woman later identified as Alexander was kneeling on the ground beside the van with the body of a child in her arms. The child had what appeared to be gunshot wounds to the back of his head and in the forehead, the officer said.

Henderson said the baby started crying and showing signs of life while being treated by medical personnel at the scene. But he said he was at Upstate University Hospital about 2 1/2 hours later when the child was pronounced dead.